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      02-20-2013, 09:42 AM   #8
VailM3
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Drives: 2011 Z4 35is
Join Date: Jan 2013
Location: Geneva Switzerland

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Quote:
Originally Posted by Land_Shark View Post
Well BMW claims the is generates a 340 hp. But we all know how conservative their figures are always. So if that was more like a 360 hp and ESS stage 2 is at 380 hp (With no other mods) 20 hp is not that noticeable...
1000 bucks seems like alot of cash for 20 horsepower.
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